package org.example.controller;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import org.example.utils.ValidCode;
import org.springframework.security.authentication.*;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.web.WebAttributes;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;

import java.awt.image.BufferedImage;
import java.io.IOException;

@Controller
public class SecurityController {
    @GetMapping("/index")
    public String index() {
        return "index";
    }

    @GetMapping("/menu{num}/{id}")
    public String index(@PathVariable Integer num, @PathVariable Long id) {
        return "menu" + num + "/" + id;
    }

    @GetMapping("/toLogin")
    public String toLogin(HttpServletRequest request) {
        String msg = (String) request.getSession().getAttribute("msg");
        if (msg != null) {      //如果存在错误信息，则从新显示错误
            request.setAttribute("msg", msg);
        }
        return "login";
    }

    @GetMapping("/toLogin/error")
    public String toLogin(HttpServletRequest request, Model model) {
        AuthenticationException attribute = (AuthenticationException) request.getSession().getAttribute(WebAttributes.AUTHENTICATION_EXCEPTION);
        if (attribute instanceof UsernameNotFoundException || attribute instanceof BadCredentialsException) {
            model.addAttribute("msg", "用户名或密码错误");
        } else if (attribute instanceof DisabledException) {
            model.addAttribute("msg", "用户已被禁用");
        } else if (attribute instanceof LockedException) {
            model.addAttribute("msg", "账户被锁定");
        } else if (attribute instanceof AccountExpiredException) {
            model.addAttribute("msg", "账户过期");
        } else if (attribute instanceof CredentialsExpiredException) {
            model.addAttribute("msg", "证书过期");
        }
        return "login";
    }

    @GetMapping("/validcode")
    public void getValidPicture(HttpServletRequest request, HttpServletResponse response) throws IOException {
        ValidCode validCode = new ValidCode();
        BufferedImage image = validCode.getImage();
        String validcode = validCode.getValidcode();          //获取随机验证码
        System.out.println("validcode:" + validcode);
        HttpSession session = request.getSession();
        session.setAttribute("validcode", validcode);     //将验证码存入session
        ValidCode.output(image, response.getOutputStream()); //输出图片
    }

    @GetMapping("/errorRole")
    public String errorRole() {
        return "errorRole";
    }
}
